The study was a classroom action research (CAR). The aim was to investigate how experiential learning method could improve the participation of the seventh grade students at SMPN 11 Satap Belimbing of vocabulary learning. The researcher used observation checklist, field note and vocabulary test to be used in two cycles in this research. This research result showed that the students in the first cycle were enthusiasm in activities, but the students still passive because it was a new method, in order that it continue to the next cycle.. The second cycle showed that the students were more active and energetic in the learning process. They also looked good attitudes and the class was comfortable and the brainstorming in the beginning of class well worked very well and the the class was controlled by teacher in applying experiential learning method. In short, the students had an increasing in participating the teaching and learning process through experiential learning method. In addition, the researcher recommended the experiential learning method can be applied in teaching vocabulary in the classroom.Keywords: Students’ Participation, Experiential Learning Method, vocabulary.